Home / 1,771.25-2,651.40-1,620.05

Finding the Fourth Proportional to 1,771.25, 2,651.40 and 1,620.05

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Solution

The fourth proportional to 1,771.25, 2,651.40 and 1,620.05 is: 2,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.25 : 2,651.40 = 1,620.05 : x
  2. Step 2: Convert to fraction form
    1,771.25/2,651.40 = 1,620.05/x
  3. Step 3: Cross multiply
    1,771.25x = 2,651.40 × 1,620.05
  4. Step 4: Simplify right side
    1,771.25x = 4,295,387.31
  5. Step 5: Solve for x
    x = 4,295,387.31/1,771.25
  6. Step 6: Final answer
    x = 2,425.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.